Pneumatics

Hi all,

I am designing a robot which will ideally use pneumatics to fire a lifting arm (FW is a prototype for HW).
However I am new to pneumatics and have a few questions:

1) What is required in a pneumatic system? Ive had a look online and i believe that ill need the items in the list below, is this on the right lines?

A tank
On/off valve (possibly integrated with tank)
dump valve
safety blowout valve
regulator
Buffer tank (possibly)
solenoid
ram

2) Connectivity of the parts. From what ive read I believe that the following setup would be needed:
tank -> on/off valve -> safety valve -> dump valve -> regulator -> Buffer Tank -> solenoid -> ram

Is this on the right lines?

3) Where is the best place to get pneumatic parts?

4) Any recommendation of parts?

I understand from other HWs that the dump valve and on/off valve need to be accessible without the use of a tool.

Cheers

Nick